247152155 has 4 divisors (see below), whose sum is σ = 296582592. Its totient is φ = 197721720.

The previous prime is 247152149. The next prime is 247152163. The reversal of 247152155 is 551251742.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 247152155 - 2²² = 242957851 is a prime.

It is a super-2 number, since 2×247152155² = 122168375442288050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24715211 + ... + 24715220.

It is an arithmetic number, because the mean of its divisors is an integer number (74145648).

Almost surely, 2^247152155 is an apocalyptic number.

247152155 is a deficient number, since it is larger than the sum of its proper divisors (49430437).

247152155 is an equidigital number, since it uses as much as digits as its factorization.

247152155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49430436.

The product of its digits is 14000, while the sum is 32.

The square root of 247152155 is about 15721.0735956550. The cubic root of 247152155 is about 627.5593442391.

The spelling of 247152155 in words is "two hundred forty-seven million, one hundred fifty-two thousand, one hundred fifty-five".